5results about How to "Improve flight performance" patented technology

The utility model provides a freight unmanned plane relates to unmanned plane technical field, including fuselage for loading goods, the fuselage tail lower portion is equipped with rear aircraft wheel, rear aircraft wheel is connected with the fuselage through support rod, rear wing is located the fuselage tail upper portion and has upper reflex angle, front wing is located the fuselage head lower portion and has lower reflex angle, the front wing both sides lower portion is equipped with front aircraft wheel, tail push propeller is located the fuselage tail, vertical propeller is located the fuselage both sides, wherein, tail push propeller drives through the fuselage upper oil dynamic piston engine, vertical propeller drives through fuselage upper motor. A freight unmanned plane in the utility model, solved the problem that the prior art lacks a freight unmanned plane capable of stable vertical take-off and landing and long range and large load.

This invention belongs to the field of variable wing technology and discloses a lightweight integrated aerodynamic drive system and a deformable wing. The aerodynamic drive system includes: a double-acting cylinder integrated with the valve bodies of a normally open and normally closed electromagnetic directional valve via a cylinder head; a combined valve comprising an inflation valve and a pressure reducing valve; the inflation valve is located above the pressure reducing valve, with its valve body integrated with the pressure reducing valve's valve body, and its outlet flow channel directly connected to the pressure reducing valve's inlet flow channel; the pressure reducing valve is located on the top of the front cylinder head of the double-acting cylinder, and is connected to the normally open electromagnetic directional valve via a gas-sealed connection, directly docking with a gas cylinder. This system combines optimized gas path design and hardware integration, integrating energy and drive functions, resulting in a compact and lightweight structure. It can adapt well to the requirements of limited installation space, significantly improving the system's adaptability to various operating conditions, thereby enhancing the aircraft's flight performance.

This application provides a compound variable-pitch propeller system and control method based on circulation control, relating to the field of aviation technology. The compound variable-pitch propeller system based on circulation control includes: a dual-rotor variable-pitch motor, which is disposed in the propeller hub. The dual-rotor variable-pitch motor includes a first rotor and a second rotor. The first rotor is connected to an inner worm gear, which is connected to a variable-pitch mechanism. The second rotor is connected to an outer worm gear, which is connected to a control surface deflection mechanism. The propeller blades include fixed blades and movable control surfaces. The fixed blades are connected to the propeller hub, and the movable control surfaces are rotatably connected to the fixed blades. The propeller blades have jet slits. A transmission mechanism connects the control surface deflection mechanism and the movable control surfaces for the deflection motion of the movable control surfaces, thereby improving the efficiency and adaptability of the propeller and optimizing flight performance.

The application provides a band type unlocking separation device and relates to the technical field of aerospace. The band type unlocking separation device comprises a band structure, the band structure comprises a band body with elasticity and a clamping block, the clamping block limits a first cylinder structure and a second cylinder structure through a limiting groove, the band body is used for elastic deformation to abut against a first limiting protrusion and a second limiting protrusion through the clamping block, and the band type unlocking separation device further comprises a position keeping structure connected with both ends of the band body to keep the band body in an elastic deformation state. The both ends of the band structure are limited through the position keeping structure, and the first cylinder structure and the second cylinder structure are limited through the clamping block. When unlocking and separating, the position keeping structure is released from the limitation, the band structure is contracted and deformed, and unlocking and separation are realized. The application can be arranged on an inner wall and is more suitable for scenes with higher requirements on the smoothness of the outer surface of the cylinder structure.